ADUM7641CRQZ

Common Mode Transient Immunity (Min):	15kV/µs
Base Part Number:	ADUM7641
Supplier Device Package:	20-QSOP
Package / Case:	20-SSOP (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Voltage - Supply:	3 V ~ 5.5 V
Rise / Fall Time (Typ):	2ns, 2ns
Pulse Width Distortion (Max):	6ns
Propagation Delay tpLH / tpHL (Max):	50ns, 50ns
Data Rate:	25Mbps
Series:	iCoupler®
Voltage - Isolation:	1000Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	5/1
Number of Channels:	6
Isolated Power:	No
Type:	General Purpose
Technology:	Magnetic Coupling
Part Status:	Active
Packaging:	Tube

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Digital Isolators: ADUM7641CRQZ Application Field and Working Principle

Digital isolators are a specialized type of electronic device used to isolate one circuit from another. They provide galvanic isolation to protect against electrical overstress (EOS) and electrostatic discharge (ESD) events, and to reduce or eliminate errors due to ground potential differences. Digital isolators are often used in applications where data has to be reliably transmitted across two circuits of different potentials.The ADUM7641CRQZ is an example of a digital isolator. This device is a high-performance digital isolator and signal conditioner with integrated capacitive-coupling isolation technology. It is specifically designed for use in industrial, fieldbus, and motor control-based isolation applications. The device\'s signal conditioner feature includes 10-bit buffering, built-in noise reduction, signal inverting, and tested off-state leakage current of less than 5 nA. The ADUM7641CRQZ is constructed with two independent isolation channels. Each of these channels provides up to 400V of isolation and a propagation delay of 9ns. The wide schedule bandwidth can support data rates up to 25Mbps. Each channel also provides a 1700V/µs common-mode transient immunity and a 10kV/µs I/O transient immunity, making it reliable and resistant to ESD events. The internal working principle of the ADUM7641CRQZ is based on a capacitive-coupling, high-performance analog modulation technique, which provides extreme accuracy and signal integrity. This technique uses a transmitter circuit to generate a modulated signal in response to an external signal and a receiver circuit to decode the modulated signal and drive a load. The transmitter is a pulse width modulator that uses an external clock signal input to generate a modulated data output stream. The data output is transmitted through a pair of optimized capacitances to the receiver portion of the device. This signal is then processed by the receiver circuit and latched onto the receiver output. To ensure optimal performance, the ADUM741CRQZ also contains an array of built-in protections. These protections are designed to protect the device from a variety of threats, such as electrostatic discharge, power surge, power glitch, and overvoltage.Overall, the ADUM7641CRQZ is an ideal solution for isolating two ports in industrial, fieldbus, and motor control-based systems. The integrated capacitive-coupling isolation technology, 10-bit buffering, noise reduction, signal inverting, excellent isolation and transient immunities, and built-in protections make it an ideal choice for applications where reliable data transmission across two circuits of different potentials is required.

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